Bettye, contact your telephone service provider and tell them what's happening. Then, since you state that the calls have become threatening, contact your local police department and tell them about it. Be prepared to tell them the date and time of any calls, as well as the content of any ...

It is unusual for anyone to be electrocuted from a telephone wire. It has happened when lines were struck by lightning. Normal telephone voltage is 48 volts. Ringing voltage might be as high as 90 volts. But normally your body presents a resistance over 1000 ohms, so maximum current is small.